1. Newton’s 2nd Law
Put on pg.20 in NB

2. Get a whiteboard & a marker!
You may work with a partner or by yourself!
Have your NB open to pg. 20 & write “WB’s” at the top!
You’ll need your calculator!

3. Reminders:
You MUST show work for the math problems or you won’t get credit for the problem!
Check your units!
Be sure to box/circle your answer!

4. # 1
Translate the equation a = F/m into an English sentence with the same meaning.

5. # 2 A net force of 723N acts on a 73kg cart What is the acceleration?
What is the acceleration of the cart if the mass is doubled?
What is the acceleration of the cart if instead the force is doubled?

6. # 3
A certain motor can produce a force of 70N on a model plane. If the required acceleration is 30 m/s2 , then what is the maximum mass the plane can have?

7. # 4
A car has a mass of 2,000kg. How much force is required to stop the car in 4.0 seconds from a speed of 20 m/s?

8. # 5
What is the acceleration of a 100kg object that experiences a force of -10N?

9. # 6
How much force is required to accelerate a 0.10 gram mosquito at 20 m/s2 ?

10. # 7
A 600kg car accelerates from rest to 30 m/s in 6.0 seconds. What is the net force on the car?